Lock-key guard



UNITED STATES PATENT OFFICE.

oHAErLEsLEAvIT'r, or oLEvELAND,oH1o.

LOCK-KEY GUARD.

ASpecification forming partof Letters Patent No. 46,914, dated March 21, 1865. Y/

To all whom, it may concern:

Be it known that I, C. LEAVITT, of Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Lock-Key Guards; and I do hereby declare that the following is a full and `complete description of the construction and operation of the same, reference being had to the accompanying drawings, making a part of this specification, in which- My improvement relates to a guard adjustable and portable, whereby the key is prevented from being turned in the lock on the outside and unlocking the door.

A represents a sect-ion of the door; B, the handle on the inside, that operates the catch b in the usual manner. On thestem C of thehandle is suspended av guard, D, which is made of a rod or strip of metal formed in the shape of a loop at one end, as at D', that is placed on the stem of the door-handle. The other end extends down, forming a stem, and is designed to be placed in the bow of the key when the door is locked. The handle may b e detached from the lock in the ordinary way so as to attach the guard. The key-holeA F and escuteheon G, on the inside, are placed at right angles to the key-hole and escutch'eon,

on the outside, (indicated by the dotted' lines F G,) to prevent the key from being pushed out o t the lock when the door is locked on the 1 inside in the usual manner, the guardraised by means of the loop on the handle, and the stem d of the guard put through the bow end of the key E, as represented. The lock is firmly secured, the guard preventing the possibility of turning the key so as to unlockthe door from the outside. i

,By raising the guard out of the key and letting it fall to one side, as indicated by the dotted lines H, the door can be locked and unlocked in the ordinary way,`the guard being put in the key when it is desired to render the lock more secure.

Fig. 2 represents a guard similar to the guard D, only a section of it is removed, so that it can be detachedreadily from a door,

'lh'eloop being inY th-eTi'orm ot' a hook, as represented. Thisis of great service in traveling, asv the guard can be carried and placed on any door, rendering" the lock more secure.

I am aware that a rod connected with the inside oi' the door and passed through the bow of the key to prevent its being turned in the lock has been used? but what distinguishes my improvement from all others is the arrangement of thev escutcheon and key-holes on each side of the door in an angular position to each other, and, in combination with the key and guard, prevents the door from being'burglariously opened from the outside by picking the lock or turning the key. v

What l claim`as my improvement, and desire to secure by Letters Patent, is- The guard D, in combination with the lockkeyand the escutcheon and key-holes at right anglesto each other, as and for the purpose set forth.

CHARLES .LEAVITT. Witnesses:

W. H. BUEEIDGE, A. W. MCCLELLAND. 

